2 * This file is part of wl1251
4 * Copyright (c) 1998-2007 Texas Instruments Incorporated
5 * Copyright (C) 2008 Nokia Corporation
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
29 static int wl1251_event_scan_complete(struct wl1251 *wl,
30 struct event_mailbox *mbox)
34 wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d",
35 mbox->scheduled_scan_status,
36 mbox->scheduled_scan_channels);
39 ieee80211_scan_completed(wl->hw, false);
40 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed");
42 if (wl->hw->conf.flags & IEEE80211_CONF_IDLE)
43 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
49 #define WL1251_PSM_ENTRY_RETRIES 3
50 static int wl1251_event_ps_report(struct wl1251 *wl,
51 struct event_mailbox *mbox)
55 wl1251_debug(DEBUG_EVENT, "ps status: %x", mbox->ps_status);
57 switch (mbox->ps_status) {
58 case EVENT_ENTER_POWER_SAVE_FAIL:
59 wl1251_debug(DEBUG_PSM, "PSM entry failed");
61 if (wl->station_mode != STATION_POWER_SAVE_MODE) {
62 /* remain in active mode */
63 wl->psm_entry_retry = 0;
67 if (wl->psm_entry_retry < WL1251_PSM_ENTRY_RETRIES) {
68 wl->psm_entry_retry++;
69 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
71 wl1251_error("Power save entry failed, giving up");
72 wl->psm_entry_retry = 0;
75 case EVENT_ENTER_POWER_SAVE_SUCCESS:
76 case EVENT_EXIT_POWER_SAVE_FAIL:
77 case EVENT_EXIT_POWER_SAVE_SUCCESS:
79 wl->psm_entry_retry = 0;
86 static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
88 wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
89 wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
90 wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
93 static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
98 wl1251_event_mbox_dump(mbox);
100 vector = mbox->events_vector & ~(mbox->events_mask);
101 wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector);
103 if (vector & SCAN_COMPLETE_EVENT_ID) {
104 ret = wl1251_event_scan_complete(wl, mbox);
109 if (vector & BSS_LOSE_EVENT_ID) {
110 wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
112 if (wl->psm_requested &&
113 wl->station_mode != STATION_ACTIVE_MODE) {
114 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
120 if (vector & PS_REPORT_EVENT_ID) {
121 wl1251_debug(DEBUG_EVENT, "PS_REPORT_EVENT");
122 ret = wl1251_event_ps_report(wl, mbox);
127 if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) {
128 wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
130 /* indicate to the stack, that beacons have been lost */
131 if (wl->vif && wl->vif->type == NL80211_IFTYPE_STATION)
132 ieee80211_beacon_loss(wl->vif);
135 if (vector & REGAINED_BSS_EVENT_ID) {
136 if (wl->psm_requested) {
137 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
143 if (wl->vif && wl->rssi_thold) {
144 if (vector & ROAMING_TRIGGER_LOW_RSSI_EVENT_ID) {
145 wl1251_debug(DEBUG_EVENT,
146 "ROAMING_TRIGGER_LOW_RSSI_EVENT");
147 ieee80211_cqm_rssi_notify(wl->vif,
148 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
152 if (vector & ROAMING_TRIGGER_REGAINED_RSSI_EVENT_ID) {
153 wl1251_debug(DEBUG_EVENT,
154 "ROAMING_TRIGGER_REGAINED_RSSI_EVENT");
155 ieee80211_cqm_rssi_notify(wl->vif,
156 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
165 * Poll the mailbox event field until any of the bits in the mask is set or a
166 * timeout occurs (WL1251_EVENT_TIMEOUT in msecs)
168 int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms)
170 u32 events_vector, event;
171 unsigned long timeout;
173 timeout = jiffies + msecs_to_jiffies(timeout_ms);
176 if (time_after(jiffies, timeout))
181 /* read from both event fields */
182 wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector,
183 sizeof(events_vector));
184 event = events_vector & mask;
185 wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector,
186 sizeof(events_vector));
187 event |= events_vector & mask;
193 int wl1251_event_unmask(struct wl1251 *wl)
197 ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask));
204 void wl1251_event_mbox_config(struct wl1251 *wl)
206 wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
207 wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
209 wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
210 wl->mbox_ptr[0], wl->mbox_ptr[1]);
213 int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num)
215 struct event_mailbox mbox;
218 wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
223 /* first we read the mbox descriptor */
224 wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
225 sizeof(struct event_mailbox));
227 /* process the descriptor */
228 ret = wl1251_event_process(wl, &mbox);
232 /* then we let the firmware know it can go on...*/
233 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);